F04C 19/005
Details concerning the admission or discharge
Official title: {Details concerning the admission or discharge}
F04C19/005 (Details concerning the admission or discharge) appears on 108 US grants and 89 published applications in this corpus.
Search patents in F04C- Granted patents
- 108
- Published applications
- 89
- Assignees
- 42
- Inventors
- 154
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 4 |
| 2005 | 0 | 4 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 8 |
| 2009 | 3 | 3 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 2 | 2 |
| 2013 | 4 | 4 |
| 2014 | 1 | 8 |
| 2015 | 6 | 5 |
| 2016 | 1 | 6 |
| 2017 | 6 | 4 |
| 2018 | 4 | 6 |
| 2019 | 4 | 3 |
| 2020 | 5 | 5 |
| 2021 | 7 | 8 |
| 2022 | 4 | 1 |
| 2023 | 6 | 3 |
| 2024 | 4 | 5 |
| 2025 | 2 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for cleaning a liquid ring pump system3 Mar 2026US 12,565,890 B2Edwards Technologies Vacuum Engineering (Qingdao) Company Limited
- Turbomachine provided with a magnetic drive pump14 Oct 2025US 12,442,385 B2Safran Helicopter Engines
- Air compressor17 Jun 2025US 12,331,744 B2
- Sealing soft water recovery apparatus for vacuum pump in vacuum pressure swing adsorption oxygen generation system26 Nov 2024US 12,152,585 B1Shanghai Lifengas Co., Ltd
- Valve arrangement17 Sep 2024US 12,092,106 B2
- Two-Stage Pump27 Nov 2025US 2025/0361864 A1Truma Gerätetechnik GmbH & Co. KG
- System and method for cleaning a liquid ring pump system22 May 2025US 2025/0163915 A1Edwards Technologies Vacuum Engineering (Qingdao) Company Limited
- Air compressor19 Dec 2024US 2024/0418168 A1
- Sealing soft water recovery apparatus for vacuum pump in vacuum pressure swing adsorption oxygen generation system28 Nov 2024US 2024/0392786 A1Shanghai Lifengas Co., Ltd
- Liquid ring rotor11 Jul 2024US 2024/0229816 A9
Most cited
By later US patents
- Liquid ring pumps with hermetically sealed motor rotors52US 7,465,375 B2DEKA Products Limited Partnership · 2008
- Pressurized vapor cycle liquid distillation43US 7,597,784 B2DEKA Products Limited Partnership · 2009
- Sealing and dynamic operation of a liquid ring pump36US 4,747,752 ASomarakis, Inc. · 1988
- Bearing fluid distribution systems for liquid ring pumps with rotating lobe liners36US 5,197,863 AThe Nash Engineering Company · 1993
- Liquid ring pump with conical or cylindrical port member29US 4,498,844 AThe Nash Engineering Company · 1985